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Former Terrorism Prosecutor Sean Buckley Appointed to Key Manhattan U.S. Attorney Role

Sean Buckley, a seasoned former terrorism prosecutor, has been appointed to the No. 2 position at the Manhattan U.S. Attorney’s Office. His experience is expected to help stabilize an office recently rocked by internal resignations and political controversy, particularly in light of interim U.S. Attorney Jay Clayton’s lack of prosecutorial background.

Sean Buckley will occupy a role at the Manhattan U.S. attorney’s office that is expected to be especially influential because the head of the office has no prosecutorial experience. | Yuki Iwamura/AP

Veteran Prosecutor Sean Buckley Returns to Manhattan U.S. Attorney’s Office

Sean Buckley has been selected for the deputy U.S. attorney position in Manhattan, a move that brings extensive prosecutorial experience back to a high-profile federal office. Buckley’s prior tenure at the office spanned nine years, during which he co-led the terrorism and international narcotics unit. He is especially noted for securing the conviction of a high-level aide to Osama bin Laden.


Jay Clayton’s Unconventional Leadership and Buckley’s Role

Buckley’s return comes under the leadership of interim U.S. Attorney Jay Clayton, who lacks a background in criminal prosecution. Clayton’s appointment has drawn attention due to the influential nature of the office, which oversees major cases tied to Wall Street, terrorism, and public corruption. Buckley is expected to provide crucial prosecutorial guidance in this context.


Turmoil After Adams Case Dismissal

The Manhattan office has been under strain since the Justice Department dropped a major corruption case against New York City Mayor Eric Adams. The case’s dismissal led to high-profile resignations, including that of acting U.S. Attorney Danielle Sassoon, who refused to comply with federal directives. Several other prosecutors resigned in protest, citing concerns about political interference.


Shifting Priorities at DOJ

With the Adams case no longer on the agenda, the Department of Justice is signaling a shift toward priorities such as prosecuting transnational corporations, immigration enforcement, and terrorism-related cases. These areas align well with Buckley’s and new criminal chief Amanda Houle’s expertise — both having served in the terrorism unit.


Professional Confidence in Buckley’s Appointment

Legal professionals familiar with Buckley expressed confidence in his ability to help restore stability and credibility to the office. Former prosecutor Carrie Cohen noted Buckley’s strong reputation both inside the federal prosecutor’s office and in private defense practice.

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